from django.db import models

class Area(models.Model):
    name = models.CharField(max_length=20,verbose_name='区域名字')
    parent = models.ForeignKey('self',on_delete=models.SET_NULL,null=True,blank=True,verbose_name='上级区域')
    class Meta:
        db_table = 'tb_areas'


    def __str__(self):
        return "%s-%s"%(self.id,self.name)